孔子根据鲁国的历史编写了《春秋》后就以春秋作为一个时期的名称，春秋开始于[ ]

根据课文，补写出下列名篇名句中的空缺部分。（6分）

小题1:淇水汤汤，                   。（《诗经·氓》）

小题2:青青子衿，                   。（曹操《短歌行》）

小题3:                 ，齐彭殇为妄作。（王羲之《兰亭集序》）

小题4:暧暧远人村，                     。（陶渊明《归园田居》）

小题5:                       ，抱明月而长终。（苏轼《赤壁赋》，）

小题6:波光里的艳影，                    。（徐志摩《再别康桥》）

只用一种试剂，可区别Na₂SO₄、AlCl₃、NH₄Cl、MgSO₄四种溶液，这种试剂是（  ）

A．HCl

B．BaCl₂

C．NaOH

D．AgNO₃

阅读理解。

     When humans and nature go head to head, nature often ends up losing. Rivers get polluted. Trees are

knocked down. Natural resources are exhausted. That's what makes the Galapagos Islands so special-it's

one of the few pristine (原始状态的) places on Earth that nature can truly call its own.

     For people used to having wild animals run at the scent of humans, a visit to the Calapagos is a real

eye-opening experience. Over 1,600 kms west of Ecuador (厄瓜多尔) ,the islands are home to a unique

variety of animals that have absolutely no fear of people. Visitors can play on the beach with sea lions and

giant sea turtles, swim with dolphins and whales, and get close enough to the penguins to count the eggs

in their nests.

     The islands were declared a national park over 40 years ago, and the number of human visitors is tightly

limited to avoid damaging the environment or putting stress on the animals. Tourists have to pay a $100 daily

visitors fee,a nd can't step off the boat unless accompanied (陪同 ) by an official guide. Once on the islands,

you have to stay on the trail, but that rarely presents a problem: the animals are so curious about people that

they'll usually come up to say hello.

      "It's a little like being in a zoo," said one traveler." But instead of us looking at the animals, the animals are

looking at us.

     Aside from the wildlife, one of the islands' more unusual features is its post office. You can send postcards

for free, but the catch is that there's no postman to collect them. Instead, travelers pick up mail addressed to

people who live near them back home, and then hand-deliver the postcards when their trip is finished.

1. The Galapagos Islands are _____.

A. terribly polluted

B. near Ecuador

C. in the Atlantic Ocean

D. independent of Ecuador

2. Which animal is NOT mentioned in the passage?

A. Whales.

B. Sea lions.

C. Goats.

D. Dolphins.

3. On the Galapagos Islands the mail is delivered by____.

A. the government

B. the post office

C. the tourists

D. the guides

4. What would be the best title for the passage?

A. The Anti-Zoo

B. Humans and Nature

C. Go Head to Head

D. Ecuador-An Island Country

某大型企业，其生产用房原值为9000万元，还建有一座内部医院，一个幼儿园，一个商店，房产原值分别为300万元、150万元、200万元。当地规定允许减除房产原值的25%，其应缴纳的房产税是( )万元。

A．81

B．82.8

C．86.85

D．110.4

某分部工程中各项工作间逻辑关系见表3-1，相应的双代号网络计划如图3-2所示，图中错误有（）。

表3-1

A．多个终点节点

B．多个起点节点

C．工作代号重复

D．不符合给定逻辑关系

E．节点编号有误